We've expanded our DNS security monitoring by adding three new blocklist sources: DNS4EU, AdGuard, and Control-D.
Why More Sources Matter
Different DNS security providers use different filtering methodologies and data sources. By monitoring against multiple providers, you get broader threat coverage and can detect regional blocking issues that might only appear in certain resolver networks. This also helps reduce false positives—if your domain is blocked by one provider but not others, it's worth investigating whether it's a legitimate concern or an overly aggressive filter.
The New Sources
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DNS4EU is the European Union's public DNS resolver with a focus on privacy and GDPR compliance. It provides malware and phishing protection while respecting user privacy.
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AdGuard DNS specializes in ad and tracker blocking with family protection filters. If you're running any ad-supported services, monitoring against AdGuard helps ensure you're not inadvertently blocked.
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Control-D brings modern DNS filtering with custom blocklist management and advanced filtering capabilities. Their geographic routing options mean they can provide regional blocking insights that other providers might miss.